Boiler mounting



m, w, mmc. MMM@ J. W. PUTNAM BOILER MQUNTI NG v Filed UCl.. 21, 192,2

1N VEN TOR ATTORNEY Patented oei. iai, ieee.y

JOSEPH W. PUTNAM, 0F EAST ORANGE, NEW JERSEY.

BOILER MOUNTING.

Application filed October 21, 1922.

To all 'whom t 'may concern.'

Beit known that I, JOSEPH W. PUTNAM, a citizen of the United States, and aresident of East Orange, in the county of Essex and State of New Jersey, have invented certain new and `useful Improve-ments in Boiler Mountings, of which thefollowing is a specification.

This invention relates to a baffle wall or the like for boiler tubes and to the method of making the same.

In the art of boiler mounting, as heretofore practiced, it has been the custom either to imbed the boiler tubes in a solid wall formed from plastic refractory material, or else to build channels, by means of preformed bricks, extending diagonally with respect to the boiler tubes andto fill said channels with plastic refractory material. In the former instance it is impossible to replace a boiler tube without dismantling the wall or a large partthereof, in addition to which the expansion due to heat tends to produce cracks in and distortions of the wall; and in the latter instance, although the replacement of a tube is possible, the construction is expensive and it is difficult to obtain the cementitious bond rendered necessary by this construction between an old wall section and a new wall section. In addition to this it is not practical to make the bricks less than one inch thick because such bricks cannot be molded Without warping, and it is therefore not possible to usev the preformed bricks when the channels are small. A like difficult-y is also encountered when replacement work is carried on in old boilers where the tubes are badly warped. A further advantage accruing from dispensing with preformed bricks in building channels is that it is not necessary to carry a stock of preformed bricks of different sizes, which results in .a reduction of the cost of construction. It has also been attempted to build a wall entirely of preformed bricks, but this is unsatisfactory bei cause, when replacing the bricks, smaller bricks than those originally employed have to be used in order to get them into position.

I have found that these disadvantages may be overcome by building a wall devoid of pre-formed bricks by successively molding, in position with respect to the boiler tubes, a plurality of independently removable wall sections of refractory material and in interlocking with each other said molded Serial No. 596,005.

wall sections during and by the process of molding the same.

In the accompanying drawings the invention is `disclosed in a concrete and preferred form in which:

Fig. 1 is a vertical sectional face view on the plane of line 1 1 of Fig. 2 showing a wall embodying the invention.

Figf2 is a vertical sectional view on the plane of line 2-2 of Fig. 1.

Fig. 3 is a perspective view of one of the molding elements of sheet material. l

The boiler tubes are 'indicated at 1 and are usually arranged in staggered relation in cross section as shown. 2 indicates a plurality of wall sections molded in position with respect to the boiler tubes. AThese wall sections are independently removable and the adjacentedges of said section are shaped so as to interlock with each other. rIhis shaping is produced by interposing', during the molding operation, mold members 3 of sheet material suitably shaped as by means of corrugations or otherwise. Mold members 3 may be of any suitable sheet material such as metal, paper or cardboard and are of.

very slight thickness. It will be understood that in building the baffle wall, supported by bridgewall 1 or otherwise, the operator will start say at the lower left hand corner of Fig. 1 and will first mold the mold section 2a, the refractory material being placed between the bridgewall 4 and mold member 3, That surface 2b which is adjacent to mold member 3a receives the shape of said mold member. The next wall section 2C is now molded on top of mold member 3a and is bounded by mold member 3b.

It will now be understood that a plurality of wall sections are built up having shaped surfaces that are formed during and by the molding operation, and that the sheet material of mold members 3 is so thin and the corrugations thereof so deep that interlock ing of the wall sections takes place. The mold members are left in position and may or may not be destroyed by the heat when the boiler is fired. The heat of the boiler is, however, so intense that expansion of the tubesand wall sections takes place and produces a gas tight partition and this although there is no bond between adjacent wall sections. Mold members 3 may run in any direction, such as vertically or horizontally, or diagonally in the same or different directions or a combination of these may be used.

When a. brent tube is l'fefileer neplaned` that walLseetiQIL/inwlieln the tube .iSiiIllfleddedi-s i structure; If desired` the replaeed Wall: Seoremoved, the operation being easyrrheeaiuee,

of ,the shrinkageV whiolif telres'. .place between the wall sections when the boiler cools oil" and because there is usually no cemelltitousbond betweenadjacent sections. VIt is also :easy to replace a wallrsetionfbecause interlocking corrugationsand not e new cementitiousloond ere dependediupomte suppertthe j tieni may lbefillled ini directly on@ the: shaped l .feeeeefthe adjacent wall sections, ybut peeli-r 'erably new molding niembersare inserted between the-old wall- Seetios and the new Y seetionsf I claim?` f ,l l1. The process ofx building a vbalieawall,

l Y vvdevoid of pre-*formed bricks, forxboilertubes which feonsistslin successively molding,l in

position `with respect; to. the boiler tubes,` inf dependently removable" wall; sections ofrefractory inaterialhaving opposing faces with which consists in'I successively molding, in

position withjrespect to; Y the boilertubes?Y independently removable wall-i sections of relcaetory I1f1atenial`, -andK in: interposing during the, molding operation, between vadjacent well seotions molding members of sheet ina-- teriali shaped .to produce complementary shaped surfaces on adjacent wall sections that4V interlock during and by the process of moldinger 1 l 3. YA baille Wall or the like devoid of preformed bricks, forboiler tubes comprising: ai plurality` off; independently Vmolded wall Sections otrelraetery materiel', eaehniold 'section-A lieving el shaped surface that interlocks with e; complementary shapedsur-face Yof anVA adjacent molded wall@ section.`

A bari-lle well.` orft'hei like, devoid of pneformed bricks for boiler tubes comprising:

er plurelitiyv oli independently molded wall sectionsotretractory materiali, eachv mold section having a shaped surfaoethat inter- -leckswitha complementary shaped suriiece of an adjacent; molded wall section, and

molding( members of: sheet materiel,4 shaped to produce the said complementary yshaped surfaces en adjacent well Sections,v inte`rposed between adjacent; wall, sections.r

'Signed at; NewfYoi-lr City, in the county of New York and State of New York, this 19th dey'oOotober, 1922.

loslnrn w. PUTNAM. 

